Results 31 to 40 of about 26,274 (211)

Forced Periodic Reactor Operation Applied to Methanol Synthesis

open access: yesChemCatChem, EarlyView.
Forced periodic operation of methanol synthesis is studied theoretically and experimentally considering an industrial Cu/ZnO/Al2O3 catalyst. The nonlinear frequency response method and rigorous mathematical optimization predict attractive forcing parameters.
Lothar Kaps   +10 more
wiley   +1 more source

Some weakly singular Volterra integral inequalities with maxima in two variables

open access: yesJournal of Inequalities and Applications, 2023
In this paper, we establish some new weakly singular Volterra type integral inequalities that include the maxima of the unknown function of two variables.
Yining Sun, Run Xu
doaj   +1 more source

Hyers-Ulam-Rassias-Kummer stability of the fractional integro-differential equations

open access: yesMathematical Biosciences and Engineering, 2022
In this paper, using the fractional integral with respect to the Ψ function and the Ψ-Hilfer fractional derivative, we consider the Volterra fractional equations.
Zahra Eidinejad, Reza Saadati
doaj   +1 more source

A Practical Real‐Time Observer‐Based Radiation Prediction Algorithm for Solar Plants

open access: yesEnergy Science &Engineering, EarlyView.
A novel radiation prediction method is proposed. The model's existence is verified by applying real data to an offline identifier. An adaptive state/parameter estimator is developed to identify the model. The identification process occurs in real‐time, independent of specific situations. The method offers universal radiation prediction.
S. Sepehr Tabatabaei   +2 more
wiley   +1 more source

Convergence and data dependence results of the nonlinear Volterra integral equation by the Picard's three step iteration

open access: yesAIMS Mathematics
Picard's three step iteration algorithm was one of the iteration algorithms that was recently shown to be faster than some other iterative algorithms in the existing literature.
Lale Cona
doaj   +1 more source

A Pontryagin maximum principle for terminal state-constrained optimal control problems of Volterra integral equations with singular kernels

open access: yesAIMS Mathematics, 2023
We consider the terminal state-constrained optimal control problem for Volterra integral equations with singular kernels. A singular kernel introduces abnormal behavior of the state trajectory with respect to the parameter of $ \alpha \in (0, 1) $.
Jun Moon
doaj   +1 more source

Volterra integral equations: the singular case

open access: yesHokkaido Mathematical Journal, 2003
The authors are concerned with the investigation of singular Volterra integral equations of the form \[ y(t)= \int^t_0 k(t, s) f(s,y(s))\,ds,\quad t\in [0,T]. \] The singularity feature appears in the nonlinearity \(f(t,y)\), which may admit a nonregular behavior at \(y= 0\).
AGARWAL, Ravi P., O'REGAN, Donal
openaire   +2 more sources

A Reduction Algorithm for Volterra Integral Equations

open access: yesThe PUMP Journal of Undergraduate Research, 2023
An integral equation is a way to encapsulate the relationships between a function and its integrals. We develop a systematic way of describing Volterra integral equations – specifically an algorithm that reduces any separable Volterra integral equation into an equivalent one in operator-linear form, i.e., one that only contains iterated integrals. This
Richard Gustavson, Sarah Rosen
openaire   +3 more sources

A large, infrequent ecosystem subsidy (cicada carcasses) and warming additively accelerate development and increase growth of larval amphibians

open access: yesLimnology and Oceanography, EarlyView.
Abstract Many ecosystems receive resource subsidies that affect productivity and food webs. Ecosystem subsidies vary in quantity, quality, and timing, and effects are often mediated by environmental factors, including temperature. Deposition of periodical cicada carcasses into ponds represents a large, high‐quality, infrequent subsidy.
Elizabeth N. Gallagher   +3 more
wiley   +1 more source

Zero-sum linear quadratic stochastic integral games and BSVIEs [PDF]

open access: yes, 2010
This paper formulates and studies a linear quadratic (LQ for short) game problem governed by linear stochastic Volterra integral equation. Sufficient and necessary condition of the existence of saddle points for this problem are derived. As a consequence
Shi, Yufeng, Wang, Tianxiao
core  

Home - About - Disclaimer - Privacy